Salt Lake City vs capital of Utah

Salt Lake City and capital of Utah both are nouns.

Word	Noun	Adjective	Verb	Adverb
Salt Lake City	Yes	No	No	No
capital of Utah	Yes	No	No	No

As nouns, Salt Lake City and capital of Utah are synonyms defined as:

Salt Lake City and capital of Utah: the capital and largest city of Utah; located near the Great Salt Lake in north central Utah; world capital of the Mormon Church

Salt Lake City (noun)	capital of Utah (noun)
the capital and largest city of Utah; located near the Great Salt Lake in north central Utah; world capital of the Mormon Church	the capital and largest city of Utah; located near the Great Salt Lake in north central Utah; world capital of the Mormon Church